Flashcards in Weather Test -Ms. Adams Deck (33):
What are clouds?
Visible mass particles made of water and ice
What is humidity?
The amount of moisture in the air
What is our air made up of and what percentage?
Other gases 1%
Air moves from areas of __________ pressure to areas of __________ pressure.
High to low
What is air pressure?
The weight of air at a particular location
What is wind created by?
Differences in air pressure
The high pressure belts at 30 degrees north or south latitudes are called what?
Global winds in the US that blow from the west are called?
Describe how local wind blow
From any direction
Pressure belts are caused by?
Uneven heating of the earth
The doldrums are an area of very little wind due to?
Warm air rising (low pressure)
What is air doing in a n area of high pressure?
Air is cooling and sinking
What are Narrow belts of high speed, high altitude winds that don't follow a regular pattern?
What is a thermometer used for?
Measure air temperature
What is an anemometer used for?
Measures wind speed
What is a rain gauge used for?
Measures amount of precipitation
What is a sling psychometer used for?
What is a barometer used for?
What is a weather vane used for?
What is a body of air with a similar temperature and moisture level?
What two terms are used to describe the temperature of an air mass?
Polar and tropical
What are two terms to describe the moisture content of an air mass?
Continental and maritime
What is a boundary between two air masses called?
Why is it drier in Las Vegas than San Francis?
The air in Las Vegas comes from over land and the air in San Francisco comes from over water
Describe a warm front.
Warm air moves in and is lifted above the cooler air
Describe a cold front
Very dense cold air moving forward
Describe an occluded front
A fast cold front catches up with a warm front
Describe a stationary front
Warm and cold front run into each other and don't move
List the layers of the atmosphere in order and one important fact about it.
Exosphere - blends to space
Thermosphere - space ships orbit here
Mesosphere - meteors burn up in the layer
Stratosphere - ozone layer
Troposphere - all weather
Would there be more storms at a low pressure or high pressure zone? Why?
Air is rising, condensing, forming clouds and rain
Why don't global winds blow in straight lines?
How does air pressure change as altitude increases?